[ PS ] : Insert Interval

Author: uraflower

insert-interval/uraflower.js

@@ -0,0 +1,34 @@
+/**
+ * @param {number[][]} intervals
+ * @param {number[]} newInterval
+ * @return {number[][]}
+ */
+const insert = function(intervals, newInterval) {
+    const merged = [];
+    let i = 0;
+
+    // 겹치지 않는 앞부분 push
+    while (i < intervals.length && intervals[i][1] < newInterval[0]) {
+        merged.push(intervals[i]);
+        i++;
+    }
+
+    // 겹치는 부분 처리
+    while (i < intervals.length && intervals[i][0] <= newInterval[1]) {
+        newInterval[0] = Math.min(newInterval[0], intervals[i][0]);
+        newInterval[1] = Math.max(newInterval[1], intervals[i][1]);
+        i++;
+    }
+    merged.push(newInterval);
+
+    // 겹치지 않는 뒷부분 push
+    while (i < intervals.length) {
+        merged.push(intervals[i]);
+        i++;
+    }
+
+    return merged;
+};
+
+// 시간복잡도: O(n)
+// 공간복잡도: O(n) (반환할 배열)